arm-linux 交叉编译 mp4v2

2014-09-23 14:44 1901人阅读评论(0) 收藏举报

1、下载mp4v2的源代码（http://code.google.com/p/mp4v2/downloads/list）mp4v2-2.0.0.tar.bz2

2. 进入相应目录

./configure --prefix=/usr/local/mytools/mp4v2-2.0.0/install --host=arm-arago-linux-gnueabi CC=arm-arago-linux-gnueabi-gcc CXX=arm-arago-linux-gnueabi-g++

3. make

4. make install

-------------------------------------------------------------------------------------------------

库文件过大，优化相关选项

Configuration:
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--help=short display options specific to this package
--help=recursive display the short help of all the included packages
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--cache-file=FILE cache test results in FILE [disabled]
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Installation directories:
--prefix=PREFIX install architecture-independent files in PREFIX
[/usr/local]
--exec-prefix=EPREFIX install architecture-dependent files in EPREFIX
[PREFIX]

By default, `make install' will install all the files in
`/usr/local/bin', `/usr/local/lib' etc. You can specify
an installation prefix other than `/usr/local' using `--prefix',
for instance `--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
--bindir=DIR user executables [EPREFIX/bin]
--sbindir=DIR system admin executables [EPREFIX/sbin]
--libexecdir=DIR program executables [EPREFIX/libexec]
--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
--localstatedir=DIR modifiable single-machine data [PREFIX/var]
--libdir=DIR object code libraries [EPREFIX/lib]
--includedir=DIR C header files [PREFIX/include]
--oldincludedir=DIR C header files for non-gcc [/usr/include]
--datarootdir=DIR read-only arch.-independent data root [PREFIX/share]
--datadir=DIR read-only architecture-independent data [DATAROOTDIR]
--infodir=DIR info documentation [DATAROOTDIR/info]
--localedir=DIR locale-dependent data [DATAROOTDIR/locale]
--mandir=DIR man documentation [DATAROOTDIR/man]
--docdir=DIR documentation root [DATAROOTDIR/doc/mp4v2]
--htmldir=DIR html documentation [DOCDIR]
--dvidir=DIR dvi documentation [DOCDIR]
--pdfdir=DIR pdf documentation [DOCDIR]
--psdir=DIR ps documentation [DOCDIR]

Program names:
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Optional Packages:
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both]
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Some influential environment variables:
CXX C++ compiler command
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LDFLAGS linker flags, e.g. -L<lib dir> if you have libraries in a
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CC C compiler command
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Use these variables to override the choices made by `configure' or to help
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cmd：

--disable-option-checking

--disable-debug
--disable-optimize
--disable-fvisibility
--disable-gch
--disable-largefile
--disable-util

--disable-dependency-tracking

--disable-libtool-lock

mp4v2 接口函数

2014-09-23 15:24 3980人阅读评论(4) 收藏举报

MP4录制程序是根据mpeg4ip中mpeg4ip-1.5.0.1\server\mp4live\file_mp4_recorder.cpp文件改的。程序支持h264+aac（raw 流）的写入方式，用到了动态库mp4v2-2.0.0，不要用mpeg4ip中那个较老的版本，因为在录制大文件时会有效率问题，下面是一些mp4v2接口的简介。

MP4FileHandle MP4Create (const char* fileName，uint32_t flags)
功能：创建MP4文件句柄。
返回：MP4文件句柄。
参数：fileName 要录制的MP4文件名；flags 创建文件类型，如果要创建普通文件用默认值0就可以，如要录制大于4G的MP4文件此处要设置MP4_CREATE_64BIT_DATA。

bool MP4SetTimeScale( MP4FileHandle hFile, uint32_t value )
功能：设置时间标度。
返回：成功返回true，失败返回false。
参数：hFile MP4文件句柄，value 要设置的值（每秒的时钟ticks数）。

MP4TrackId MP4AddH264VideoTrack(MP4FileHandle hFile,
   uint32_t timeScale,
   MP4Duration sampleDuration,
   uint16_t width,
uint16_t height,
   uint8_t AVCProfileIndication,
   uint8_t profile_compat,
   uint8_t AVCLevelIndication,
   uint8_t sampleLenFieldSizeMinusOne)
功能：添加h264视频track。
返回：返回track id号。
参数：hFile MP4文件句柄，timeScale 视频每秒的ticks数（如90000），sampleDuration 设置为 MP4_INVALID_DURATION，width height 视频的宽高，AVCProfileIndication profile (baseline profile, main profile, etc. see)，profile_compat compatible profile，AVCLevelIndication levels，sampleLenFieldSizeMinusOne 设置为3.
注意： AVCProfileIndication，profile_compat, AVCLevelIndication,这三个参数值是在h264流中得到的。

MP4TrackId MP4AddAudioTrack(
MP4FileHandle hFile,
uint32_t timeScale,
MP4Duration sampleDuration,
uint8_t audioType)
功能：添加音频（aac）track。
返回：返回track id号。
参数：hFile MP4句柄，timeScale音频每秒的ticks数（如16000），下面两参数设置为MP4_INVALID_DURATION和MP4_MPEG4_AUDIO_TYPE。

bool MP4SetTrackESConfiguration(
   MP4FileHandle hFile,
   MP4TrackId trackId,
   const uint8_t* pConfig,
   uint32_t configSize );

功能：设置音频解码信息（如果设置错误会导致没有声音）。
返回：成功返回true，失败返回false。
参数：hFile 文件句柄，trackId 音频的track id，pConfig 记录解码信息的二进制流，configSize 解码串的长度。
注意：mpeg4ip 使用faac进行aac音频编码的，在编码时可以调用相应的函数得到二进制串pConfig和长度configSize，但是如果aac不是用faac编码的，这是需要自己填充pConfig，可以参考faac的实现，下面是一个填充结构例子：

前五个字节为 AAC object types LOW 2
接着4个字节为码率index 16000 8
接着4个字节为 channels 个数 1
应打印出的正确2进制形式为 00010 | 1000 | 0001 | 000
2 8 1

bool MP4WriteSample(
MP4FileHandle hFile,
MP4TrackId trackId,
const uint8_t* pBytes,
uint32_t numBytes,
MP4Duration duration DEFAULT(MP4_INVALID_DURATION),
MP4Duration renderingOffset DEFAULT(0),
bool isSyncSample DEFAULT(true) );

功能：写一帧视频数据或写一段音频数据。
返回：成功返回true，失败返回false。
参数：hFile 文件句柄，trackId 音频或视频的track id，pBytes为要写的数据流指针，numBytes为数据字节长度，duration为前一视频帧与当前视频帧之间的ticks数，或这是前一段音频数据和当前音频数据之间的ticks。isSyncSample 对视频来说是否为关键帧。
注意：1，duration这个参数是用来实现音视频同步用的，如果设置错了会造成音视频不同步，甚至会出现crash现象（一般出现在调用MP4Close是crash）。 2，对于视频流MP4WriteSample函数每次调用是录制前一帧数据，用当前帧的时间戳和前一帧的时间戳计算duration值，然后把当前帧保存下来用做下次调用MP4WriteSample时用，写音频数据一样。

void MP4AddH264SequenceParameterSet(
MP4FileHandle hFile,
MP4TrackId trackId,
const uint8_t* pSequence,
uint16_t sequenceLen );
和
void MP4AddH264PictureParameterSet(
MP4FileHandle hFile,
MP4TrackId trackId,
const uint8_t* pPict,
uint16_t pictLen );

功能：添加序列参数集，添加图像参数集。
参数：hFile 文件句柄，trackId 视频track id，pSequence和pPict为要写入的序列图像参数集的数据指针，sequenceLen和pictLen为串长度。
注意：当检测到序列参数集或图像参数集更新时要调用MP4AddH264SequenceParameterSet或MP4AddH264PictureParameterSet进行更新。